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This FPSO had endured many years on station in the vicinity of the Shetland Islands when fatigue hot-spots were located in cargo oil tanks. LETS Global was contracted to strengthen the fatigue hot-spots against further structural fatigue.

FPSO life extension: ultrasonic peening in cargo tank

After magnetic particle inspection the LETS Global Ultrasonic Peening Procedure was applied to all located fatigue hot-spots, extending the service life considerably. LETS personnel gained access to concerned areas with rope access.

Ultrasonic peening of bottom transverse bracket in a FPSO cargo tank

In total LETS personnel made four separate trips to the client’s offshore installation in order to execute the project.